31 C.F.R. § 353.16 Pledge.
Title 31 - Money and Finance: Treasury
A savings bond may not be hypothecated, pledged, or used as security for the performance of an obligation.
Title 31: Money and Finance: Treasury
PART 353—REGULATIONS GOVERNING UNITED STATES SAVINGS BONDS, SERIES EE AND HH
Subpart D—Limitations on Transfer or Pledge
§ 353.16 Pledge.